Compound-feeder for steam-boilers.



Patented Feb. I8, |902.

2-Sheets-Sheet l.

W. D. LABADIE. GDHPDUND FEEDER FDR STEAM BDILERS.

(Application filed Oct. 19, 1900.)

(No Model.)

N0. 693,552. Patented Feb. I8, |902.

W. D. LABADIE.

GUMPUUND FEEDER F0`B STEAM BUILES.

(Applicatin filed Oct. 19, 1900.) (no Model.) 2 sheets-sheet 2.

Urirnn marne lVILLlAM DARVIN LABADIE,

compound-FEEDER OF SOUTH BEND, INDIANA.

FOR STEAlVlnBOILERS.

SPECFIGATION forming part of' Letters Patent No. 693,552, dated. February 18, 1902. Application filed October 19, 1900. Serial No. 33,572. (No model.)

To @ZZ whom t irl/Cty concern.-

Beit known that I, WILLIAM DARvIN LABA- DIE, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Compound-Feeders for Boilers; and I do hereby declare the following to be a full, clear, and exact de scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

lWIy invention relates to an improvement in compound-feeders for boilers; and its objects are to produce a mechanism by means of which compounds of any "suitable composition may be forced into boilers in a cheap and simple manner and to also produce a mechanism which is specially adapted for the purpose and is strong, cheap, and durable and not likelyl to get out of repair.

My invention consists in a suitable cylinder for holding the compound which is to be forced into the boiler, a guiding piston-rod which extends through both ends of the cylinder and is provided with a buffer at each end, and a'piston secured to the piston-rod, combined with suitable supply and outlet pipes 'provided with the necessary checkvalves, by means of which the compound is fed to the cylinder and then forced into the boiler, and the water or steam used in forcing the compound into the boiler is allowed to escape from the cylinder, all of which will be more fully described hereinafter.

In the accompanying drawings, which represent my invention, Figure l is a longitudinal vertical section taken through the cylinder. Figs. 2 and 3 are end views of a feeder which embodies my invention, the views being taken from opposite ends. Fig. 4 is a side elevation of the feeder.

A represents a cylinder of any suitable length and diameter and which is raised above the floor by suitable legs or supports. Placed inside of this cylinder A is the piston C, suitably packed, so as to form a tight joint with the sides of the cylinder as it'is forced backward and forward, and upon each side of this piston are suitable jam-nuts D of large size, secured to the piston-rod B inlany suitable manner, preferably by enlarging the piston rod at this part and forming screw-threads thereon, on which the jam-nuts screw and by means of which they are set up against the piston, as shown in Fig. l. The piston-rod is nearly double the length of the cylinder and projects through both of the cylinder-heads, as shown. This rod has a reciprocating motion with the piston C, which is rigidly secured to it, and upon each end of the pistonrod is secured a suitable buffer O in the shape of a spiral spring, which serves to prevent damage to the ends of the cylinder if the pres'- sure should be accidentally turned on without the cylinder being filled or greater' pressure is applied in the cylinder against the piston than is necessary.

Connected to the top of the cylinder at or near its center is the inlet-pipe P, provided with the petcock R,through which the air from the cylinder is allowed to escape while the cylinder is being filled. Also connected to this inlet-pipe is a supply-pipe Q, of smaller diameter than the pipe P, provided with a suitable valve, and through which pipe when the valve is opened the compound to be forced into the boiler is fed into the cylinder, and as the pipe P is of larger diameter than the pipe Q the compound, which is slowly admitted, does not entirely fill the pipe P, and thereby allows the air to escape through the same pipe and out of the petcock R. Through the bottom of the cylinder at or near its center is a discharge-pipe N, provided with a suitable valve M, and through which the water or steam which has been used to force the piston from one end of the cylinder to the other is allowed to escape after having done its work. Connected to each end of the oylinder and within the recess E is a branch K of a pipe, through which the steam or water is alternately admitted to opposite ends of the cylinder for the purpose of forcing the piston back and forth therein, and each of these branch pipes is provided with a valve J. When one of these valves is opened for the purpose of admitting water or steam under pressure to one end of the cylinder, the one at the opposite end is closed. Also leading from each end of the cylinder is a discharge-pipe I, through which the cornpound in the cylinder is forced into the boiler, and which pipe is provided with avalve Gat each end. Connected to this pipe, so as to ICO .pls

form a part thereof, is a gage or sight-tube H, through which the compound passes in making its escape from either end of the cylinder, and through which tube I-I the operator can see at what rate the compound in the boiler is being discharged and regulate the pressure upon the piston accordingly. When the valve G is opened at one end to permit the discharge as the piston is being forced toward that end of the cylinder, the other valve G is closed.

The operation is as follows: The pipe Q being supplied from a tank in which the boiler compound is mixed, the valve in this pipe is opened, and when the petcock R is opened the compound Will oW through the pipe P into the cylinder A, the air passing up through the pipe P as the compound flows through the same, the difference in the size of the pipes P and -Q being sufficient to allow the air to escape through the pipe P and out of the petcock R Without interference, as the iniowing compound is not of sufficient volume to entirely fill the pipe P. After the cylinder has been filled the petcock R and the valve in the cylinder-pipe Q are both closed, and then that valve G which is at the opposite end of the cylinder from the piston is opened and the other valve G is closed. By opening the valve G at the opposite end ofthe cylinder from the piston the compound in the cylinder is allowed to escape through that branch of the pipe I, and by closing that valve G which is at the same end of the cylinder as the piston the steam or Water used in forcing the piston toward the opposite end of the cylinder is prevented from escaping through the other branch of the pipe I, and thus mingling with the compound, as Well as losing power for driving the piston. Vhen the valve .I in that branch of the pipe K at the same end as the cylinder is opened, the steam or water under pressure is forced into the end of the cylinder and drives the piston toward the opposite end of the cylinder, and thereby forces the compound with which the cylinder has been lled into the boiler through the supply-pipe I. In order to eutirelyempty the cylinder, the jamnuts D enter into the recesses E When the piston reaches the end of its stroke in either direction, and thus forces every possible part of v the compound into the boiler, so that there will be no waste of the compound. After the piston has been forced to the opposite end of the cylinder, thus emptying the cylinder of all the compound contained therein, the petcock R is opened to admit air, and the valve M is opened to permit the escape of the steam or Water which has been used in forcing the piston to the opposite end of the cylinder. After the steam or Water has escaped through pipe N and the cylinder is empty the valve M is then closed, as are also the valve J at one end of the cylinder and the valve G at the other, When the above described operation is repeated. It requires about eight hours for the piston to make a full stroke when the compound is being fed to a boiler, so that rapid automatic exhausts and supplies are not necessary. l

I-Iaving thus described my invention, I claim- 1. Inacompound-feederforboilers,thecylinder having recesses formed in the inner sides of its tWo heads, a piston placed therein and provided Wi-th jam-nuts which iit the recesses in the inner sides of the heads, a piston-rod which extends through both heads of the cylinder and to Which the said piston is secured, and suitable buffers applied to opposite ends of the piston-rod, combined with suitable inlet and outlet pipes provided with valves, and a cock for admitting and discharging air, substantially as described.

2. A compound-feeder for boilers consisting of a cylinder provided with a compoundsupply pipe and compound-discharge pipes, a piston-rod extending longitudinally through the cylinder and carrying a piston, cushioning springs mounted on each end of the piston-rod and steam-inlet pipes attached to the cylinder to admit steam for reciprocating the piston and piston-rod, substantially as described.

3. A compound-feeder for boilers consisting of aA cylinder, a piston-rod extending through both ends of the cylinder and carrying a piston adapted to reciprocate in the cylinder, pipes connected with the ends of the .cylinder to admit steam and reciprocate the piston, pipes connected with the end of the cylinderl for discharging the compound, and a steam-discharge pipe connected to the side of the cylinder at the bottom thereof, substantially as described.

4. In a compound-feeder for boilers, a cylinder provided with a pipe P Which serves to admit the compound; to discharge air from the cylinder', and to admitl air after the compound has been discharged from the cylinder; combined with a piston-rod carrying a piston adapted to reciprocate in the cylinder, suitable steam-inlet pipes and compound-discharge pipes, and a steam/-discharge pipe, substantially as described.

In testimony whereoflafiix my signature in presence of tWo Witnesses.

WILLIAM DARVIN LABADIE.

Witnesses:

GEORGE OLTsoH, HUGO OLTscH.

IOO

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